312 lines
7.8 KiB
C
312 lines
7.8 KiB
C
/***************************************************************************
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* Copyright (C) 2007 by Dominic Rath *
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* Dominic.Rath@gmx.de *
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* *
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* Copyright (C) 2007,2008 Øyvind Harboe *
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* oyvind.harboe@zylin.com *
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* *
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* Copyright (C) 2008 by Spencer Oliver *
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* spen@spen-soft.co.uk *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the *
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* Free Software Foundation, Inc., *
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
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***************************************************************************/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "target_request.h"
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#include "target_type.h"
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#include "binarybuffer.h"
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#include "trace.h"
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#include "log.h"
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static command_t *target_request_cmd = NULL;
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static int charmsg_mode = 0;
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static int target_asciimsg(target_t *target, uint32_t length)
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{
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char *msg = malloc(CEIL(length + 1, 4) * 4);
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debug_msg_receiver_t *c = target->dbgmsg;
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target->type->target_request_data(target, CEIL(length, 4), (uint8_t*)msg);
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msg[length] = 0;
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LOG_DEBUG("%s", msg);
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while (c)
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{
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command_print(c->cmd_ctx, "%s", msg);
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c = c->next;
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}
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return ERROR_OK;
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}
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static int target_charmsg(target_t *target, uint8_t msg)
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{
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LOG_USER_N("%c", msg);
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return ERROR_OK;
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}
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static int target_hexmsg(target_t *target, int size, uint32_t length)
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{
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uint8_t *data = malloc(CEIL(length * size, 4) * 4);
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char line[128];
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int line_len;
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debug_msg_receiver_t *c = target->dbgmsg;
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uint32_t i;
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LOG_DEBUG("size: %i, length: %i", (int)size, (int)length);
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target->type->target_request_data(target, CEIL(length * size, 4), (uint8_t*)data);
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line_len = 0;
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for (i = 0; i < length; i++)
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{
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switch (size)
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{
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case 4:
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line_len += snprintf(line + line_len, 128 - line_len, "%8.8" PRIx32 " ", le_to_h_u32(data + (4*i)));
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break;
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case 2:
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line_len += snprintf(line + line_len, 128 - line_len, "%4.4x ", le_to_h_u16(data + (2*i)));
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break;
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case 1:
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line_len += snprintf(line + line_len, 128 - line_len, "%2.2x ", data[i]);
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break;
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}
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if ((i%8 == 7) || (i == length - 1))
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{
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LOG_DEBUG("%s", line);
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while (c)
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{
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command_print(c->cmd_ctx, "%s", line);
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c = c->next;
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}
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c = target->dbgmsg;
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line_len = 0;
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}
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}
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free(data);
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return ERROR_OK;
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}
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/* handle requests from the target received by a target specific
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* side-band channel (e.g. ARM7/9 DCC)
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*/
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int target_request(target_t *target, uint32_t request)
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{
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target_req_cmd_t target_req_cmd = request & 0xff;
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if (charmsg_mode) {
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target_charmsg(target, target_req_cmd);
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return ERROR_OK;
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}
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switch (target_req_cmd)
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{
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case TARGET_REQ_TRACEMSG:
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trace_point(target, (request & 0xffffff00) >> 8);
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break;
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case TARGET_REQ_DEBUGMSG:
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if (((request & 0xff00) >> 8) == 0)
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{
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target_asciimsg(target, (request & 0xffff0000) >> 16);
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}
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else
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{
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target_hexmsg(target, (request & 0xff00) >> 8, (request & 0xffff0000) >> 16);
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}
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break;
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case TARGET_REQ_DEBUGCHAR:
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target_charmsg(target, (request & 0x00ff0000) >> 16);
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break;
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/* case TARGET_REQ_SEMIHOSTING:
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* break;
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*/
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default:
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LOG_ERROR("unknown target request: %2.2x", target_req_cmd);
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break;
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}
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return ERROR_OK;
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}
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static int add_debug_msg_receiver(struct command_context_s *cmd_ctx, target_t *target)
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{
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debug_msg_receiver_t **p = &target->dbgmsg;
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if (target == NULL)
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return ERROR_INVALID_ARGUMENTS;
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/* see if there's already a list */
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if (*p)
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{
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/* find end of linked list */
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p = &target->dbgmsg;
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while ((*p)->next)
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p = &((*p)->next);
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p = &((*p)->next);
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}
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/* add new debug message receiver */
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(*p) = malloc(sizeof(debug_msg_receiver_t));
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(*p)->cmd_ctx = cmd_ctx;
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(*p)->next = NULL;
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/* enable callback */
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target->dbg_msg_enabled = 1;
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return ERROR_OK;
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}
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static debug_msg_receiver_t* find_debug_msg_receiver(struct command_context_s *cmd_ctx, target_t *target)
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{
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int do_all_targets = 0;
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debug_msg_receiver_t **p = &target->dbgmsg;
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/* if no target has been specified search all of them */
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if (target == NULL)
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{
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/* if no targets haven been specified */
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if (all_targets == NULL)
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return NULL;
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target = all_targets;
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do_all_targets = 1;
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}
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do
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{
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while (*p)
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{
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if ((*p)->cmd_ctx == cmd_ctx)
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{
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return *p;
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}
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p = &((*p)->next);
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}
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target = target->next;
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} while (target && do_all_targets);
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return NULL;
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}
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int delete_debug_msg_receiver(struct command_context_s *cmd_ctx, target_t *target)
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{
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debug_msg_receiver_t **p;
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debug_msg_receiver_t *c;
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int do_all_targets = 0;
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/* if no target has been specified search all of them */
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if (target == NULL)
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{
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/* if no targets haven been specified */
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if (all_targets == NULL)
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return ERROR_OK;
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target = all_targets;
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do_all_targets = 1;
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}
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do
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{
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p = &target->dbgmsg;
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c = *p;
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while (c)
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{
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debug_msg_receiver_t *next = c->next;
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if (c->cmd_ctx == cmd_ctx)
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{
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*p = next;
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free(c);
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if (*p == NULL)
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{
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/* disable callback */
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target->dbg_msg_enabled = 0;
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}
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return ERROR_OK;
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}
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else
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p = &(c->next);
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c = next;
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}
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target = target->next;
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} while (target && do_all_targets);
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return ERROR_OK;
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}
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static int handle_target_request_debugmsgs_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
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{
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target_t *target = get_current_target(cmd_ctx);
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int receiving = 0;
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/* see if reciever is already registered */
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if (find_debug_msg_receiver(cmd_ctx, target) != NULL)
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receiving = 1;
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if (argc > 0)
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{
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if (!strcmp(args[0], "enable") || !strcmp(args[0], "charmsg"))
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{
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/* don't register if this command context is already receiving */
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if (!receiving)
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{
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receiving = 1;
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add_debug_msg_receiver(cmd_ctx, target);
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}
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charmsg_mode = !strcmp(args[0], "charmsg");
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}
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else if (!strcmp(args[0], "disable"))
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{
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/* no need to delete a receiver if none is registered */
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if (receiving)
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{
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receiving = 0;
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delete_debug_msg_receiver(cmd_ctx, target);
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}
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}
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else
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{
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command_print(cmd_ctx, "usage: target_request debugmsgs ['enable'|'disable'|'charmsg']");
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}
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}
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command_print(cmd_ctx, "receiving debug messages from current target %s",
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(receiving) ? (charmsg_mode?"charmsg":"enabled") : "disabled");
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return ERROR_OK;
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}
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int target_request_register_commands(struct command_context_s *cmd_ctx)
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{
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target_request_cmd =
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register_command(cmd_ctx, NULL, "target_request", NULL, COMMAND_ANY, "target_request commands");
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register_command(cmd_ctx, target_request_cmd, "debugmsgs", handle_target_request_debugmsgs_command,
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COMMAND_EXEC, "enable/disable reception of debug messages from target");
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return ERROR_OK;
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}
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